Alexandru Gagniuc | fccfee3 | 2014-03-26 18:51:08 -0500 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2013 Sage Electronic Engineering, LLC |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
Alexandru Gagniuc | fccfee3 | 2014-03-26 18:51:08 -0500 | [diff] [blame] | 14 | */ |
| 15 | |
| 16 | /* Wake status package */ |
| 17 | Name(WKST,Package(){Zero, Zero}) |
| 18 | |
| 19 | /* |
| 20 | * \_PTS - Prepare to Sleep method |
| 21 | * |
| 22 | * Entry: |
| 23 | * Arg0=The value of the sleeping state S1=1, S2=2, etc |
| 24 | * |
| 25 | * Exit: |
| 26 | * -none- |
| 27 | * |
| 28 | * The _PTS control method is executed at the beginning of the sleep process |
Marshall Dawson | a8025db | 2016-12-16 13:17:34 -0500 | [diff] [blame] | 29 | * for S1-S5. The sleeping value is passed to the _PTS control method. This |
Alexandru Gagniuc | fccfee3 | 2014-03-26 18:51:08 -0500 | [diff] [blame] | 30 | * control method may be executed a relatively long time before entering the |
Marshall Dawson | a8025db | 2016-12-16 13:17:34 -0500 | [diff] [blame] | 31 | * sleep state and the OS may abort the operation without notification to |
Alexandru Gagniuc | fccfee3 | 2014-03-26 18:51:08 -0500 | [diff] [blame] | 32 | * the ACPI driver. This method cannot modify the configuration or power |
| 33 | * state of any device in the system. |
| 34 | */ |
| 35 | Method(\_PTS, 1) { |
| 36 | /* DBGO("\\_PTS\n") */ |
| 37 | /* DBGO("From S0 to S") */ |
| 38 | /* DBGO(Arg0) */ |
| 39 | /* DBGO("\n") */ |
| 40 | |
| 41 | /* Clear sleep SMI status flag and enable sleep SMI trap. */ |
| 42 | /*Store(One, CSSM) |
| 43 | Store(One, SSEN)*/ |
| 44 | |
| 45 | /* On older chips, clear PciExpWakeDisEn */ |
| 46 | /*if (LLessEqual(\_SB.SBRI, 0x13)) { |
| 47 | * Store(0,\_SB.PWDE) |
| 48 | *} |
| 49 | */ |
| 50 | |
| 51 | /* Clear wake status structure. */ |
| 52 | Store(0, Index(WKST,0)) |
| 53 | Store(0, Index(WKST,1)) |
| 54 | |
| 55 | Store (0x07, UPWS) |
| 56 | } /* End Method(\_PTS) */ |
| 57 | |
| 58 | /* |
| 59 | * \_BFS OEM Back From Sleep method |
| 60 | * |
| 61 | * Entry: |
| 62 | * Arg0=The value of the sleeping state S1=1, S2=2 |
| 63 | * |
| 64 | * Exit: |
| 65 | * -none- |
| 66 | */ |
| 67 | Method(\_BFS, 1) { |
| 68 | /* DBGO("\\_BFS\n") */ |
| 69 | /* DBGO("From S") */ |
| 70 | /* DBGO(Arg0) */ |
| 71 | /* DBGO(" to S0\n") */ |
| 72 | } |
| 73 | |
| 74 | /* |
| 75 | * \_WAK System Wake method |
| 76 | * |
| 77 | * Entry: |
| 78 | * Arg0=The value of the sleeping state S1=1, S2=2 |
| 79 | * |
| 80 | * Exit: |
| 81 | * Return package of 2 DWords |
| 82 | * Dword 1 - Status |
| 83 | * 0x00000000 wake succeeded |
| 84 | * 0x00000001 Wake was signaled but failed due to lack of power |
| 85 | * 0x00000002 Wake was signaled but failed due to thermal condition |
| 86 | * Dword 2 - Power Supply state |
| 87 | * if non-zero the effective S-state the power supply entered |
| 88 | */ |
| 89 | Method(\_WAK, 1) { |
| 90 | /* DBGO("\\_WAK\n") */ |
| 91 | /* DBGO("From S") */ |
| 92 | /* DBGO(Arg0) */ |
| 93 | /* DBGO(" to S0\n") */ |
| 94 | |
| 95 | /* Re-enable HPET */ |
| 96 | Store(1,USBS) |
| 97 | |
| 98 | Return(WKST) |
| 99 | } /* End Method(\_WAK) */ |